Roaster



(No Model.)

N. H. MGAUSLAN.

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A77'0HNEYS.

Patented Apr. 16, 1895.

\ W/TNESSES.'

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UNITED STATES FATENT erica.

NORVAL H. MCAUSLAN, OF SUTTER CITY, CALIFORNIA.

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SPECIFICATION forming part f Letters Patent N0. 537,704, dated April 16, 1895. i

Application led November 1894- Serial No. 528,938. (No model.)

To @ZZ whom 1315 may concern:

Beit known Athat I, NoRvAL H. MoAUsLAN, of Sutter City, in the county of Sutter and State of California, have invented a new and Improved Roaster, of which the following is a full, clear, and exact description.`

The object of the invention is to provide a new and improved roaster, which is simple and durable in construction and more especially designed for use on ordinary stoves and ranges, for roasting coffee and other articles, and arranged in such a manner that the codec or other article can be readily sampled during the process of roasting, without stopping the machine; and is also arranged to carry the fumes arising from the roaster, into the stove or range, instead of permitting the fumes to escape into the room.

The invention consists principally of an exterior casing adapted to be placedV on the stove and opening into the same 4at its bottom, and a drum provided `with a damper adapted to open into the said exterior casing to cause the fumes to pass throughthe casing into the stove.

The invention further consists of an automatic sampling device arranged on the roaster.

The invention also consists of certain parts and details and combinations of the same, as will be fuily described hereinafter and then pointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar letters of reference indicate corresponding parts in all the views.

Figure l is a plan view of the improvement, with the cover in an open position.

Fig. 2 is a longitudinal section ot' the improvement, on the line 2 2 of Fig. 1. Fig. 3 is an end View of the improvement. Fig. Ltis a cross section of the drum, on the line 4 4 of Fig. 2; and Fig. 5 is a similar View of the same, on the line 5-5 of Fig. 2. p

The improved roaster is provided with an exterior casing A having a hinged hood A', and provided at its ends with longitudinally extending flanges A2 and Aa adapted to rest on the stove lid resting anges B in the top plate B of the stove or range, asis plainly shown in Fig. 2. The casing A is open at the bottom, so as to lead into the interior of the stove, and in order to securely hold the casing in position, I provide the end Harige A2, at its under side, with an outwardly curved holding iiange C adapted to engage the under side of the ange B', as is plainly shown at the right in Fig. 2. The other ange A3 is provided with a downwardly extending rib C', fitting against the inner edge of the flange B to prevent sidewise movement of the casing on the top B of the stove. A lug bolt D is held slidably on the flange A3, so as to engage the under side of the resting flange B', as illustrated at the left in Fig. 2, to securely hold the casing in position.

A button D extends from the bolt D, through the top of the flange A3, so as to be under the control of the operator, to hold the bolt open or closed when removing the casing, or refastening the same in place.

On the pintle of the hinge for the casing A and on its hood A is hung a frame E extending within the casing A, and provided at its front with a handle E' adapted to be taken hold of by the operator, to swing the said frame E into an uppermost position, as shown in Fig. 3,0r to rest the said handle on the front of the casing A, to support the said frame in a horizontal position.

In the ends of the frame E are mounted to turn the shafts F and F', secured in the heads of a drum G', mounted to turn within the frame E, as is plainly shown in the'drawings. On the outer end of the shaft F is arranged a crank arm F2 adapted to be taken hold of by the operator, to turn the said shaft and the drum G to rotate the latter within the frame E of the casing A. The shaft F' is in alignment with the shaft F, and is provided at itsouter end with a handle Fs adapted to be taken hold of by the operator, together with the shaft F, so as to remove the drum from the frame E or place itin position therein, as the case may be.

The drum G is provided on its inner peripheralsurface with longitudinally extending ribs or small projections G adapted to agitate the coffee or other article to be roasted, at the time the drum is turned. The drum G is also provided in its rim with an opening Gr2 for placing the coffee or other article to be roasted into the drum, or removing the roasted article from the drum. The opening G2 is IOO adapted to be closed by a slide G9, mounted to slide in guideways G4 held exteriorly on the rim of the drum G.

The slide G9 is formed at one end with perforations G5 adapted to be moved over the opening G2 while roasting the article, so that the fumes produced by the roasting process, can pass through the perforations into the hood A of the casing, to then pass through the opening in the bottom of the casing into the stove, and pass with the smoke and gases to the chimney. The slide G3 is, however, of such a length, that the perforated part G5 of the slide can be moved beyond the opening G2, so that the latter is fully closed.

A second escape for the fumes arising by the roasting of the coffee or other article is formed in the head G9 of the drum G, the said head'being provided, for this purpose, with damper openings G7 adapted to register with openings H in the damper H, mounted to turn on the shaft F', outside of the head G6 by shifting the damper H. The openings G7 can be closed, but usually the said openings G7 and H are in register to permit the fumes in the drum to escape into the casing A, to pass into the stove, and from the latter to the chimney. In the other head G8 of the drum G is arranged an automatic sampling device provided with the curved plate I, secured to the head and extending from the opening in the center of the head to the periphery thereof,

as is plainly shown in Fig. 4. The central opening in the head G8 leads to a chamber G9 provided with a cover G19, made of glass or other translucent or transparent material, the said chamber extending to the outside of the hood A', to permit the operator to view the contents of the chamber G9 through the said cover G19. A small opening in the end of the chamber G9 permits of removing a few grains of coee for minute inspection.

Now, it will be' seen that when the drum is revolved by the operator turning the crank arm F9, part of the coffee or other article to be roasted is taken up by the curved plate I and delivered into the chamber G9, so that the operator can view the sample to see Whether the article is sufficiently roasted or not. As

the plate l scoops up a new sample on each revolution of the drum, it is evident that the operator is enabled to continuously follow the roasting process and to be in position to know at all times the condition of the article to be roasted.

It will be seen that by the construction described, the obnoxious fumes, arising during the roasting process from the coffee or other article to be roasted, do not escape into the kitchen or other room in which the roasting is done, but the said fumes are drawn into 4the stove or range to nally pass into the chimney.

It will further be seen that by the special sampling device described, the operator is enabled to at all times examine the coee or other article without stoping the machinery, until the roasting process is completed.

Having thus fully described my invention, I claim as new and desire to secu re by Letters Patent- 1. A roaster, comprising a casing adapted to be set on a stove and provided with a hinged hood, a frame hung on the pintle connecting the hood with the casing, a drum journaled in the said frame, substantially as shown and described.

2. In a roaster, a revoluble drum having a roasting chamber and a sampling chamber havinga sight aperture and a plate extending from the periphery of the drum to the mouth of the sampling chamber automatically causing a portion of the material to pass from the roasting chamber to the sampling chamber while said drum is in movement,substan tially as set forth.

3. In a roaster, in combination, a casing, a revoluble drum to contain material to be roasted mounted in the drum and having a hollow trunnion extending through the casing and forming a sampling chamber the wall of which is provided with a sight aperture, and a plate located in said drum and extending from the periphery thereof to said hollow trunnion, and adapted to convey the material from the interior of the drum to said sampling chamber, substantially as set forth.

NORVAL lH. MCAUSLAN.

Witnesses:

G. E. MERRILL, J No. Q. LrsLu. 

